A low-cost consumer toaster oven has been modified with a digital
temperature controller, profile generation software, and a graphical
user interface for use in soldering surface mount devices on printed
circuit boards. A standard ramp-presoak-reflow-cooldown temperature
profile is included by default and temperatures and dwell times can be
modified by the user. Temperature tracking performance is very good
and several circuit boards have been soldered with the device.
Quality of the solder joints appears to be comparable to comercially
made boards. This report describes a Senior Capstone Design project
in EE449, Design of Control Systems. This project won the EE
Department "Best Capstone Design Project" award for Spring 2006.